/*
 *  Copyright 2004 by Texas Instruments Incorporated.
 *  All rights reserved. Property of Texas Instruments Incorporated.
 *  Restricted rights to use, duplicate or disclose this code are
 *  granted through contract.
 *
 */
#include <std.h>
#include <tsk.h>
#include <sem.h>
#include <gio.h>

#include <csl_dat.h>
#include <csl_cache.h>


#include <fvid.h>
#include <edc.h>
#include <vport.h>
#include <vportcap.h>
#include <vportdis.h>
#include <saa7105.h>
#include <tvp51xx.h>

#include <evmdm642.h>

#include <evmdm642_capParamsSDTVDefault.h>
#include <evmdm642_disParamsVGADefault.h>


VPORT_PortParams EVMDM642_vCapParamsPort
  = EVMDM642_CAP_PARAMS_PORT_EMBEDDED_DEFAULT;

/* caputure configuration parameters */
/* embedded sync mode is recommended as it offers better re-sync capability */

/* The available capture modes are */
/* NTSC720                         */
/* PAL720                          */

static VPORTCAP_Params EVMDM642_vCapParamsChan
  = EVMDM642_CAP_PARAMS_CHAN_EMBEDDED_DEFAULT(NTSC720);

static TVP51XX_ConfParams EVMDM642_vCapParamsTVP51XX
  = EVMDM642_CAP_PARAMS_TVP51XX_EMBEDDED_DEFAULT(NTSC601, COMPOSITE, 1);



/* display configuration parameters */
VPORT_PortParams EVMDM642_vDisParamsPort
  = EVMDM642_DIS_PARAMS_PORT_DEFAULT;

/* The available display modes are: **
** VGA(640x480@60fps)               **
** SVGA(800x600@60fps)              **
** XGA(1024x768@60fps)              */

static VPORTDIS_Params EVMDM642_vDisParamsChan
  = EVMDM642_DIS_PARAMS_CHAN_GRAYSCALE_DEFAULT(VGA);

static SAA7105_ConfParams EVMDM642_vDisParamsSAA7105
  = EVMDM642_DIS_PARAMS_SAA7105_GRAYSCALE_DEFAULT(VGA);


/* heap IDs defined in the BIOS configuration file */
extern Int EXTERNALHEAP;

/*
 * ======== main ========
 */
main()
{
    /******************************************************/
    /* open CSL DAT module for fast copy                  */
    /******************************************************/
    CSL_init();
    CACHE_clean(CACHE_L2ALL, 0, 0);
    CACHE_setL2Mode(CACHE_256KCACHE);
    CACHE_enableCaching(CACHE_EMIFA_CE00);
    CACHE_enableCaching(CACHE_EMIFA_CE01);
    DAT_open(DAT_CHAANY, DAT_PRI_LOW, DAT_OPEN_2D);

}

/*
 * ======== tskVideoLoopback ========
 * video loopback function.
 */
void tskVideoLoopback()
{
    Int status;
    FVID_Handle disChan;
    Int frames = 0;
    FVID_Frame *disFrameBuf;

    Int numLinesCap = (EVMDM642_vCapParamsChan.fldYStop1 -
       EVMDM642_vCapParamsChan.fldYStrt1+1) * 2;
    Int i;
    FVID_Handle capChan;
    Int numPixels = EVMDM642_vCapParamsChan.fldXStop1 -
       EVMDM642_vCapParamsChan.fldXStrt1+1;
    FVID_Frame *capFrameBuf;
    Int capLinePitch = EVMDM642_vCapParamsChan.fldXStop1 -
       EVMDM642_vCapParamsChan.fldXStrt1+1;
    Int disLinePitch = EVMDM642_vDisParamsChan.imgHSizeFld1;
    Int numLinesDis = EVMDM642_vDisParamsChan.imgVSizeFld1;
    Int numLines = (numLinesDis > numLinesCap) ? numLinesCap : numLinesDis;


#ifdef _PIP
    VPORTCAP_Params EVMDM642_vCapParamsChan2 = EVMDM642_vCapParamsChan;
    FVID_Handle capChan2;
    FVID_Frame *capFrameBuf2;
    Int yPitch = capLinePitch >> 1;
    Int xOffset = disLinePitch - yPitch;
    Int yOffset = numLinesDis - (numLines >> 1);
#endif


    /******************************************************/
    /* allocate both capture and display frame buffers    */
    /* in external heap memory                            */
    /******************************************************/
    EVMDM642_vDisParamsChan.segId = EXTERNALHEAP;
    EVMDM642_vDisParamsSAA7105.hI2C = EVMDM642_I2C_hI2C;

    EVMDM642_vCapParamsChan.segId = EXTERNALHEAP;
    EVMDM642_vCapParamsTVP51XX.hI2C = EVMDM642_I2C_hI2C;

    /******************************************************/
    /* initialization of capture driver                   */
    /******************************************************/
    capChan = FVID_create("/VP0CAPTURE/A/0",
            IOM_INPUT, &status, (Ptr)&EVMDM642_vCapParamsChan, NULL);

#ifdef _PIP
    EVMDM642_vCapParamsChan2.scale = VPORT_SCALING_ENABLE;
    EVMDM642_vCapParamsChan2.fldOp = VPORT_FLDOP_FLD1;
    EVMDM642_vCapParamsChan2.thrld >>=1;
    capChan2 = FVID_create("/VP1CAPTURE/A/1",
            IOM_INPUT, &status, (Ptr)&EVMDM642_vCapParamsChan2, NULL);
#endif

    /******************************************************/
    /* initialization of display driver                   */
    /******************************************************/
    disChan = FVID_create("/VP2DISPLAY", IOM_OUTPUT,
        &status, (Ptr)&EVMDM642_vDisParamsChan, NULL);


    /******************************************************/
    /* configure video encoder & decoder                  */
    /******************************************************/
    FVID_control(disChan, VPORT_CMD_EDC_BASE + EDC_CONFIG,
        (Ptr)&EVMDM642_vDisParamsSAA7105);
    FVID_control(capChan, VPORT_CMD_EDC_BASE + EDC_CONFIG,
        (Ptr)&EVMDM642_vCapParamsTVP51XX);
#ifdef _PIP
    FVID_control(capChan2, VPORT_CMD_EDC_BASE+EDC_CONFIG,
        (Ptr)&EVMDM642_vCapParamsTVP51XX);
#endif

    CACHE_clean(CACHE_L2ALL, 0, 0);
    /******************************************************/
    /* start capture & display operation                  */
    /******************************************************/
    FVID_control(disChan, VPORT_CMD_START, NULL);
    FVID_control(capChan, VPORT_CMD_START, NULL);
#ifdef _PIP
    FVID_control(capChan2, VPORT_CMD_START, NULL);
#endif

    /********************************************************/
    /* request a frame buffer from display & capture driver */
    /********************************************************/
    FVID_alloc(disChan, &disFrameBuf);
    FVID_alloc(capChan, &capFrameBuf);
#ifdef _PIP
    FVID_alloc(capChan2, &capFrameBuf2);
#endif
    frames ++;

    while(1){/* loop forever */
        /* copy data from capture buffer to display buffer */
        /***************************************************/
        for(i = 0; i < numLines; i++) {
            DAT_copy(capFrameBuf->frame.iFrm.y1 + i * capLinePitch,
              disFrameBuf->frame.rpFrm.buf + i * disLinePitch,
              disLinePitch);
        }
        FVID_exchange(capChan, &capFrameBuf);
#ifdef _PIP
        for(i = 0; i < (numLines >> 1); i++) {
            DAT_copy(capFrameBuf2->frame.iFrm.y1 + i * yPitch,
                disFrameBuf->frame.rpFrm.buf + disLinePitch
                * (yOffset + i) + xOffset, (numPixels >> 1));
        }
        FVID_exchange(capChan2, &capFrameBuf2);
#endif

        FVID_exchange(disChan, &disFrameBuf);

        frames ++;
   }
}
